CN114132376B - Steering return system - Google Patents
Steering return system Download PDFInfo
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- CN114132376B CN114132376B CN202111429182.0A CN202111429182A CN114132376B CN 114132376 B CN114132376 B CN 114132376B CN 202111429182 A CN202111429182 A CN 202111429182A CN 114132376 B CN114132376 B CN 114132376B
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- rack
- limiting
- sleeve
- limiting piece
- piece
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- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 239000011148 porous material Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 230000009286 beneficial effect Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
- B62D5/046—Controlling the motor
- B62D5/0466—Controlling the motor for returning the steering wheel to neutral position
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D3/00—Steering gears
- B62D3/02—Steering gears mechanical
- B62D3/12—Steering gears mechanical of rack-and-pinion type
Abstract
The invention relates to the technical field of automobiles, and provides a steering return system, which comprises: the steering wheel, the rotating shaft in transmission connection with the steering wheel, the motor for driving the rotating shaft to rotate, the seat body, the gear in transmission connection with the rotating shaft and the rack meshed with the gear; the rack extends along a preset straight line direction and is arranged on the seat body in a sliding way along the preset straight line; a first limiting piece is arranged at the first end of the rack, a second limiting piece is arranged on the base body, the second limiting piece is positioned on the path of the first limiting piece, and a first elastic piece is connected between the first limiting piece and the second limiting piece; the second end of the rack is provided with a third limiting part, the base is provided with a fourth limiting part, the fourth limiting part is positioned on the path of the third limiting part, and a second elastic part is connected between the third limiting part and the fourth limiting part.
Description
Technical Field
The invention belongs to the technical field of automobiles, and particularly relates to a steering return system.
Background
Modern common vehicles in automobiles. With the motorization and intellectualization of automobiles. More and more automobiles are in steering structures, and a steering wheel of the automobile is not directly connected with wheels through mechanical transmission (such as a steer-by-wire system, and the wheels are required to be steered through an electronic control system after the steering wheel is steered). However, the steering wheel cannot be aligned after being loosened during the steering process.
Disclosure of Invention
The invention aims to provide a steering return system which aims to solve the technical problem that a steering wheel cannot be returned in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme: there is provided a steering return system including: the steering wheel, a rotating shaft in transmission connection with the steering wheel, a seat body, a gear which is rotationally arranged on the seat body around a preset axis and in transmission connection with the rotating shaft, and a rack meshed with the gear; the rack extends along a preset straight line direction and is arranged on the seat body in a sliding way along the preset straight line; the two ends of the rack are respectively a first end and a second end; a first limiting piece is arranged at the first end of the rack, a second limiting piece is arranged on the base body, the second limiting piece is positioned on a path of the first limiting piece moving towards the second end of the rack, and a first elastic piece is connected between the first limiting piece and the second limiting piece; the second end of the rack is provided with a third limiting part, the base is provided with a fourth limiting part, the fourth limiting part is located on a path of the third limiting part moving towards the first end of the rack, and a second elastic part is connected between the third limiting part and the fourth limiting part.
Further, the seat body is provided with a pore canal extending along the preset straight line; the middle section of the rack is arranged in the duct in a penetrating way, and the first end of the rack and the second end of the rack are respectively positioned at the outer side of the duct.
Further, the first limiting piece is a first nut in threaded connection with the first end of the rack; the second limiting part is a first sleeve sleeved outside the rack between the first nut and the base, and the first sleeve is arranged on the base; the first sleeve is positioned in the path of travel of the first nut to retract into the bore.
Further, the first sleeve is sleeved outside the first elastic piece; the first sleeve is provided with a first limiting ring, and the first elastic piece is clamped between the first limiting ring and the first limiting piece.
Further, the third limiting piece is a second nut in threaded connection with the second end of the rack; the fourth limiting part is a second sleeve sleeved outside the rack between the second nut and the seat body, and the second sleeve is arranged on the seat body; the second sleeve is positioned in the path of travel of the second nut to retract into the bore.
Further, the second sleeve is sleeved outside the second elastic piece; the second sleeve is provided with a second limiting ring, and the second elastic piece is clamped between the second limiting ring and the second limiting piece.
Further, a first strip-shaped notch extending along the axial direction of the first sleeve is formed in the edge, close to the first nut, of the first sleeve; the first limiting piece is provided with a first boss which is used for being clamped into the first strip-shaped notch and can move along the first strip-shaped notch; the edge of the second sleeve, which is close to the second nut, is provided with a second strip-shaped notch extending along the axial direction of the second sleeve; the second limiting piece is provided with a second boss which is used for being clamped into the second strip-shaped notch and can move along the second strip-shaped notch.
Further, the edge of the first sleeve, which is close to the first limiting piece, is outwards opened; the edge of the second sleeve, which is close to the second limiting piece, is outwards opened.
Further, a first plastic annular gasket is sleeved on the first end of the rack; the first plastic annular gasket is clamped between the first elastic piece and the first limiting piece; a second plastic annular gasket is sleeved on the second end of the rack; the second plastic annular gasket is clamped between the second elastic piece and the second limiting piece.
Further, the first elastic piece is a first columnar spring sleeved on the rack; the second elastic piece is a second cylindrical spring sleeved on the rack.
The steering and aligning system provided by the invention has the beneficial effects that: compared with the prior art, the steering return system provided by the invention has the advantages that the gear is rotatably arranged on the seat body, and the gear can be driven to rotate through the rotating shaft when the steering wheel rotates; the rack extends along a preset straight line direction and is arranged on the seat body in a sliding way along the preset straight line; the gear is meshed with the rack, and the rack is driven to move along a preset straight line when the gear rotates; the two ends of the rack are respectively a first end and a second end, the first end is provided with a first limiting piece, and the seat body is provided with a second limiting piece; because the second limiting piece is positioned on the path of the first limiting piece moving towards the second end of the rack, when the first limiting piece encounters the second limiting piece in the moving process of the first end of the rack towards the second end of the rack, the second limiting piece prevents the first limiting piece from continuously moving, and the first limiting piece also prevents the rack from continuously moving after stopping moving, so that the limiting of the movement of the rack towards the second end of the rack is realized, and after stopping moving, a gear meshed with the rack and a steering wheel connected with the gear drive stop rotating, so that the limiting of steering of the steering wheel is realized; when the first limiting piece is contacted with the second limiting piece, if the first end of the rack moves in a direction deviating from the second end of the rack, the first limiting piece and the second limiting piece are separated from each other in the moving direction of the rack; because the fourth limiting piece is positioned on the path of the third limiting piece moving towards the first end of the rack, when the third limiting piece encounters the fourth limiting piece in the process of moving towards the first end of the rack, the fourth limiting piece prevents the third limiting piece from continuously moving, and the third limiting piece also prevents the rack from continuously moving after stopping moving, so that the limitation of moving towards the first end of the rack is realized, and after stopping moving, a gear meshed with the rack and a steering wheel connected with the gear drive stop rotating, so that the limitation of steering of the steering wheel is realized; when the third limiting piece is contacted with the fourth limiting piece, if the second end of the rack moves in a direction deviating from the first end of the rack, the third limiting piece and the fourth limiting piece are separated from each other in the moving direction of the rack; because the first elastic piece is connected between the first limiting piece and the seat body, the first elastic piece is deformed in the process that the first limiting piece moves along with the rack, so that the movement resistance of the rack is influenced, the change of the movement resistance of the rack can be transmitted to the steering wheel through the gear, and a user can sense the resistance feeling generated by rotating the steering wheel; the second elastic piece is connected between the second limiting piece and the seat body, and the second limiting piece can deform along with the movement of the rack, so that the movement resistance of the rack is influenced, the change of the movement resistance of the rack can be transmitted to the steering wheel through the gear, and a user can sense the resistance feeling generated by rotating the steering wheel; due to the existence of the first elastic piece and the second elastic piece, after a user rotates the steering wheel to move the rack from the initial position, the states of the first elastic piece and the second elastic piece can be changed; when the user loosens the steering wheel, the two ends of the rack are respectively pushed by the first elastic piece and the second elastic piece to restore to the initial position, so that the steering wheel is restored.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic perspective view of a steering system according to an embodiment of the present invention;
FIG. 2 is an exploded schematic view of a steering system according to an embodiment of the present invention;
fig. 3 is a schematic perspective view of installation of a first limiting member and a second limiting member according to an embodiment of the present invention;
fig. 4 is a schematic top view of installation of a first limiting member and a second limiting member according to an embodiment of the present invention;
fig. 5 is a schematic left-view installation diagram of a first limiting member and a second limiting member according to an embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view of a steering system along a rack provided by an embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view of a steering system along a gear shaft according to an embodiment of the present invention;
fig. 8 is a schematic perspective view of a base provided in an embodiment of the present invention;
fig. 9 is a schematic perspective view of a second limiting member according to an embodiment of the present invention;
FIG. 10 is a schematic perspective view of a first plastic annular gasket according to an embodiment of the present invention;
fig. 11 is a schematic perspective view of a first limiting member according to an embodiment of the present invention;
fig. 12 is a schematic perspective view of a first elastic member according to an embodiment of the present invention.
Wherein, each reference sign in the figure:
1-a base; 11-pore canal; 12-a first cavity; 2-racks; 21-a first end; 22-a second end; 31-a first limiting piece; 311-a first boss; 32-a second limiting piece; 321-a first bar-shaped notch; 322-first hook; 323-a first clamping groove; 324-a first positioning table; 325-a first stop collar; 33-a third limiting piece; 331-a second boss; 332-a second limiting ring; 34-fourth limiting piece; 341-a second bar-shaped notch; 41-a first elastic member; 42-a second elastic member; 5-a transmission rod; 61-a first plastic annular gasket; 62-a second plastic annular gasket; 7-gear; 81-a motor; 82-rotating shaft.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It should be noted that, in the description of the embodiments of the present application, unless otherwise indicated, "/" means or, for example, a/B may represent a or B; "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. Wherein A and B may be singular or plural, respectively.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Referring to fig. 1 to 12, a steering system according to the present invention will be described. A steering return system comprising: the steering wheel, a rotating shaft 82 in transmission connection with the steering wheel, a seat body 1, a gear 7 which is rotatably arranged on the seat body 1 around a preset axis and in transmission connection with the rotating shaft 82, and a rack 2 meshed with the gear 7; the rack 2 extends along a preset straight line direction, and the rack 2 is arranged on the seat body 1 in a sliding way along the preset straight line; the two ends of the rack 2 are respectively provided with a first end 21 and a second end 22; the first end 21 of the rack 2 is provided with a first limiting piece 31, the second end 22 of the rack 2 is provided with a second limiting piece 32, the second limiting piece 32 is positioned on a path of the first limiting piece 31 moving towards the second end 22 of the rack 2, and a first elastic piece 41 is connected (the connection can be any one of direct fixed connection, indirect fixed connection and abutting connection) between the first limiting piece 31 and the second limiting piece 32; the second end 22 of the rack 2 is provided with a third limiting member 33, the seat 1 is provided with a fourth limiting member 34, the fourth limiting member 34 is located on a path along which the third limiting member 33 moves towards the first end 21 of the rack 2, and a second elastic member 42 is connected (the connection may be any one of direct fixed connection, indirect fixed connection and abutting connection) between the third limiting member 33 and the fourth limiting member 34.
Thus, the gear 7 is rotatably arranged on the seat body 1, and the gear 7 can be driven to rotate by the rotating shaft 82 when the steering wheel rotates; the rack 2 extends along a preset straight line direction, and the rack 2 is arranged on the seat body 1 in a sliding way along the preset straight line; the gear 7 is meshed with the rack 2, and the gear 7 drives the rack 2 to move along a preset straight line when rotating; the two ends of the rack 2 are respectively provided with a first end 21 and a second end 22, the first end 21 is provided with a first limiting piece 31, and the seat body 1 is provided with a second limiting piece 32; since the second limiting member 32 is located on the path of the movement of the first limiting member 31 towards the second end 22 of the rack 2, when the first limiting member 31 encounters the second limiting member 32 in the process of moving the first end 21 of the rack 2 towards the second end 22 of the rack 2, the second limiting member 32 prevents the first limiting member 31 from continuing to move, and the first limiting member 31 also prevents the rack 2 from continuing to move after stopping moving, so that the limitation of the movement of the rack 2 towards the second end 22 of the rack 2 is realized, and the gear 7 meshed with the rack 2 and the steering wheel in transmission connection with the gear 7 stop rotating after stopping the movement of the rack 2, so that the limitation of steering of the steering wheel is realized; after the first stopper 31 is in contact with the second stopper 32, if the first end 21 of the rack 2 is moved in a direction away from the second end 22 of the rack 2, the first stopper 31 and the second stopper 32 are separated from each other in the moving direction of the rack 2; because the fourth limiting piece 34 is located on the moving path of the third limiting piece 33 towards the first end 21 of the rack 2, when the third limiting piece 33 encounters the fourth limiting piece 34 in the moving process of the second end 22 of the rack 2 towards the first end 21 of the rack 2, the fourth limiting piece 34 prevents the third limiting piece 33 from continuing to move, the third limiting piece 33 also prevents the rack 2 from continuing to move after stopping moving, so that the limiting of the movement of the rack 2 towards the first end 21 of the rack 2 is realized, and the gear 7 meshed with the rack 2 and the steering wheel in transmission connection with the gear 7 stop rotating after stopping moving the rack 2, so that the limiting of steering of the steering wheel is realized; after the third stopper 33 is in contact with the fourth stopper 34, if the second end 22 of the rack 2 is moved in a direction away from the first end 21 of the rack 2, the third stopper 33 and the fourth stopper 34 are separated from each other in the moving direction of the rack 2; because the first elastic piece 41 is connected between the first limiting piece 31 and the seat body 1, the first elastic piece 41 is deformed in the process that the first limiting piece 31 moves along with the rack 2, so that the movement resistance of the rack 2 is influenced, and the change of the movement resistance of the rack 2 can be transmitted to the steering wheel through the gear 7, so that a user can sense the resistance feeling generated by rotating the steering wheel; because the second elastic piece 42 is connected between the second limiting piece 32 and the seat body 1, the second elastic piece 42 is deformed in the process that the second limiting piece 32 moves along with the rack 2, so that the movement resistance of the rack 2 is affected, and the change of the movement resistance of the rack 2 can be transmitted to the steering wheel through the gear 7, so that a user can sense the resistance feeling generated by rotating the steering wheel; due to the presence of the first elastic member 41 and the second elastic member 42, after the user turns the steering wheel to move the rack 2 from the initial position, the states of the first elastic member 41 and the second elastic member 42 may be changed; when the user releases the steering wheel, both ends of the rack 2 are restored to the original positions by the pushing of the first elastic member 41 and the second elastic member 42, respectively, thereby realizing the steering wheel centering function.
In one embodiment, the steering return system further comprises: a motor 81 for driving the rotation shaft 82 to rotate. Thus, the motor 81 can simulate steering wheel rotation by driving the rotation shaft 82 to rotate;
in one embodiment, the gear 7 is a cylindrical gear 7.
In one embodiment, in the extending direction of the rack 2, the first end 21 of the rack 2 is the head end and the second end 22 of the rack 2 is the tail end.
In one embodiment, the gear 7 is arranged on the transmission rod 5, and the transmission rod 5 is in transmission connection with the steering wheel; the gear 7 is driven to rotate when the transmission rod 5 rotates.
In one embodiment, the axis of the gear 7 is arranged perpendicular to the predetermined straight line. In this way, the gear 7 can conveniently push the rack 2 to slide along a preset straight line when rotating.
In one embodiment, the first resilient member 41 is always in a compressed state.
In one embodiment, the second resilient member 42 is always in a compressed state.
In one embodiment, motor 81 feeds back to the steering wheel via shaft 82.
In one embodiment, the motor 81 drives the gear 7 to rotate via the shaft 82 and the transmission rod 5 in sequence.
In one embodiment, motor 81 is a road feel motor. In one embodiment, a screw is arranged on the output shaft of the motor 81, a transition gear is coaxially arranged on the rotating shaft, and the screw drives the rotating shaft to rotate through the transition gear.
In one embodiment, the gear 7 is engaged with the rack 2 by means of internal and external splines.
In one embodiment, the two ends of the gear 7 are arranged on the seat 1 by bearings.
In one embodiment, the rack 2 is provided at both ends on the seat 1 by plastic bearings.
Further, referring to fig. 1 to 12, as a specific embodiment of the steering system provided by the present invention, a seat 1 is provided with a hole 11 extending along a predetermined straight line; the middle section of the rack 2 is arranged in the duct 11 in a penetrating way, and the first end 21 of the rack 2 and the second end 22 of the rack 2 are respectively arranged outside the duct 11. Thus, the middle section of the rack 2 is inserted into the duct 11 on the seat body 1, and the first end 21 of the rack 2 and the second end 22 of the rack 2 are exposed outside the duct 11; the first end 21 of the rack 2 can be moved toward the cell 11 to be close to the cell 11, or the first end 21 of the rack 2 can be moved away from the cell 11 to be far away from the cell 11; the second end 22 of the rack 2 can be moved toward the cell 11 to be closer to the cell 11, or the second end 22 of the rack 2 can be moved away from the cell 11 to be farther away from the cell 11.
Further, referring to fig. 1 to 12, as a specific embodiment of the steering system provided by the present invention, the first limiting member 31 is a first nut screwed with the first end 21 of the rack 2; the second limiting piece 32 is a first sleeve sleeved outside the rack 2 between the first nut and the seat body 1, and the first sleeve is arranged on the seat body 1; the first sleeve is located in the path of travel of the first nut retracting aperture 11. Thus, the first nut is very convenient to install on the first end 21 of the rack 2, and the first nut can be directly screwed for removing the threaded connection; when the first nut moves along with the rack 2 to retract towards the duct 11 and encounters the first sleeve, the first sleeve can limit the first nut to stop, so that the first nut is prevented from approaching the duct 11 further.
Further, referring to fig. 1 to 12, as a specific embodiment of the steering system provided by the present invention, the first sleeve is sleeved outside the first elastic member 41; the first sleeve is provided with a first limiting ring 325, and the first elastic member 41 is clamped between the first limiting ring 325 and the first limiting member 31. Thus, the first sleeve is sleeved outside the first elastic piece 41, which is beneficial to keeping the stability of the first elastic piece 41; the first elastic member 41 is clamped between the first limiting member 31 and the first limiting ring 325 on the first sleeve, so that the first elastic member 41 is compressed when the first limiting member 31 approaches the first limiting ring 325.
Further, referring to fig. 1 to 12, as an embodiment of the steering system provided by the present invention, the third limiting member 33 is a second nut screwed with the second end 22 of the rack 2; the fourth limiting piece 34 is a second sleeve sleeved outside the rack 2 between the second nut and the seat body 1, and the second sleeve is arranged on the seat body 1; the second sleeve is located in the path of travel of the second nut retracting aperture 11. Thus, the second nut is very convenient to install on the second end 22 of the rack 2, and the second nut can be directly screwed for removing the threaded connection; when the second nut retracts and moves towards the duct 11 along with the rack 2 and meets the second sleeve, the second sleeve can limit and stop the second nut, and the second nut is prevented from approaching the duct 11 in a two-step mode.
Further, referring to fig. 1 to 12, as a specific embodiment of the steering system provided by the present invention, the second sleeve is sleeved outside the second elastic member 42; the second sleeve is provided with a second limiting ring 332, and the second elastic member 42 is clamped between the second limiting ring 332 and the second limiting member 32. Thus, the second sleeve is sleeved outside the second elastic piece 42, which is beneficial to keeping the stability of the second elastic piece 42; the second elastic member 42 is clamped between the third limiting member 33 and the second limiting ring 332 on the second sleeve, so that the second elastic member 42 is compressed when the third limiting member 33 approaches the second limiting ring 332.
Further, referring to fig. 1 to 12, as a specific embodiment of the steering system provided by the present invention, a first strip-shaped notch 321 extending along the axial direction of the first sleeve is formed at the edge of the first sleeve adjacent to the first nut; the first limiting piece 31 is provided with a first boss 311 which is used for being clamped into the first strip-shaped notch 321 and can move along the first strip-shaped notch 321; the edge of the second sleeve, which is close to the second nut, is provided with a second strip-shaped notch 341 extending along the axial direction of the second sleeve; the second limiting member 32 is provided with a second boss 331 which is used for being clamped into the second strip-shaped notch 341 and can move along the second strip-shaped notch 341. Therefore, after the first boss 311 at the edge of the first nut enters the first strip-shaped notch 321, the first strip-shaped notch 321 extends along the axial direction of the first sleeve, so that the first strip-shaped notch 321 can guide the first boss 311 to move, which is beneficial to keeping the first nut stable in the moving process; after the second boss 331 at the edge of the second nut enters the second strip-shaped notch 341, the second strip-shaped notch 341 extends along the axial direction of the second sleeve, so that the second strip-shaped notch 341 can guide the second boss 331 to move, which is beneficial to keeping the second nut stable in the moving process.
Further, referring to fig. 1 to 12, as an embodiment of the steering system provided by the present invention, the first sleeve is flared towards the edge of the first limiting member 31; the edges of the second sleeve adjacent the second stop 32 flare outwardly. Thus, the first elastic member 41 is more easily caught in the first sleeve under the guidance of the open edge of the first sleeve; the second resilient member 42 is more easily snapped into the second sleeve guided by the flared rim of the second sleeve.
In one embodiment, the first sleeve is a plastic piece, reducing weight and also reducing friction sound. In one embodiment, the second sleeve is a plastic piece, reducing weight and also reducing friction sound.
In one embodiment, the edges of the first sleeve adjacent the first stop 31 taper outwardly. In one embodiment, the edges of the second sleeve adjacent the second stop 32 taper outwardly.
Further, referring to fig. 1 to 12, as a specific embodiment of the steering system provided by the present invention, a first plastic annular gasket 61 is sleeved on the first end 21 of the rack 2; the first plastic annular gasket 61 is clamped between the first elastic member 41 and the first limiting member 31; a second plastic annular gasket 62 is sleeved on the second end 22 of the rack 2; a second plastic annular gasket 62 is sandwiched between the second resilient member 42 and the second stop member 32. In this way, the first plastic annular gasket 61 separates the first cylindrical spring from the first stopper 31, reducing the occurrence of sound of the first cylindrical spring during compression; the second plastic annular spacer 62 separates the second cylindrical spring from the second stop 32, reducing the sound of the second cylindrical spring during compression.
In one embodiment, the first plastic annular gasket 61 is interference fit over the rack 2 or the first limiter 31. In one embodiment, the second plastic annular gasket 62 is interference fit over the rack 2 or the second stop 32.
In one embodiment, the first plastic annular gasket 61 is secured to the first retainer 31 by screws. In one embodiment, the second plastic annular shim 62 is secured to the second stop 32 by screws.
Further, referring to fig. 1 to 12, as a specific embodiment of the steering system provided by the present invention, the first elastic member 41 is a first cylindrical spring sleeved on the rack 2; the second elastic member 42 is a second cylindrical spring sleeved on the rack 2. Thus, the first columnar spring sleeved on the rack 2 can keep a stable position relation with the rack 2; the second cylindrical spring sleeved on the rack 2 can keep a stable position relation with the rack 2.
In one embodiment, the first and second cylindrical springs are identical. Thus, the compression state of the first cylindrical spring and the second cylindrical spring after being compressed by the same distance is the same.
In one embodiment, the first stop collar 325 is provided with a first hook 322 that hooks the first cylindrical spring, and the second stop collar 332 is provided with a second hook that hooks the second cylindrical spring. Therefore, the first hook 322 can hook the first cylindrical spring very conveniently, which is beneficial to keeping the stability of the position between the first cylindrical spring and the first sleeve; the second hook can be used for conveniently hooking the second cylindrical spring, so that the stability of the position between the second cylindrical spring and the second sleeve is maintained.
In one embodiment, the number of the first hooks is three, so that the first cylindrical spring is hooked more firmly. In one embodiment, the number of the second hooks is three, so that the second cylindrical spring is hooked more firmly.
In one embodiment, the base 1 is provided with a first concave cavity 12, and the first sleeve is inserted into the first concave cavity 12; the side wall of the first concave cavity 12 is provided with a first clamping groove 323, and the outer side wall of the first sleeve is provided with a first positioning table 324 clamped in the first clamping groove 323; the seat body 1 is provided with a second concave cavity, and the second sleeve is inserted into the second concave cavity; the side wall of the second concave cavity is provided with a second clamping groove, and the outer side wall of the second sleeve is provided with a second positioning table clamped into the second clamping groove. Thus, after the first sleeve is inserted into the first concave cavity 12, the first positioning table 324 on the outer side wall of the first sleeve body can be clamped into the first clamping groove 323 for positioning; after the second sleeve is inserted into the second concave cavity, a second positioning table on the outer side wall of the second cylinder body can be clamped into the second clamping groove for positioning.
In one embodiment, the first positioning stage is in the shape of a scalloped cylinder. In one embodiment, the first card slot 323 is a scalloped cylindrical slot. In one embodiment, the second positioning stage is in the shape of a scalloped cylinder. In one embodiment, the second card slot is a scalloped cylindrical slot.
In one embodiment, the first sleeve is an interference fit when inserted within the first cavity 12. In one embodiment, the second sleeve is an interference fit when inserted within the second cavity.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (6)
1. Steering return system, characterized in that it comprises: the device comprises a rotating shaft, a seat body, a gear which is rotationally arranged on the seat body around a preset axis and is in transmission connection with the rotating shaft, and a rack meshed with the gear; the rack extends along a preset straight line direction and is arranged on the seat body in a sliding way along the preset straight line; a first limiting piece is arranged at the first end of the rack, a second limiting piece is arranged on the base body, the second limiting piece is positioned on a path of the first limiting piece moving towards the second end of the rack, and a first elastic piece is connected between the first limiting piece and the second limiting piece; a third limiting piece is arranged at the second end of the rack, a fourth limiting piece is arranged on the base body, the fourth limiting piece is positioned on a path of the third limiting piece moving towards the first end of the rack, and a second elastic piece is connected between the third limiting piece and the fourth limiting piece;
the seat body is provided with a pore canal extending along the preset straight line; the middle section of the rack is arranged in the duct in a penetrating way, and the first end of the rack and the second end of the rack are respectively positioned outside the duct;
the first limiting piece is a first nut in threaded connection with the first end of the rack; the second limiting part is a first sleeve sleeved outside the rack between the first nut and the base, and the first sleeve is arranged on the base; the first sleeve is positioned on the moving path of the first nut retracting the pore canal; the third limiting piece is a second nut in threaded connection with the second end of the rack; the fourth limiting part is a second sleeve sleeved outside the rack between the second nut and the seat body, and the second sleeve is arranged on the seat body; the second sleeve is positioned on the moving path of the second nut retracting the pore canal;
the edge of the first sleeve, which is close to the first nut, is provided with a first strip-shaped notch extending along the axial direction of the first sleeve; the first limiting piece is provided with a first boss which is used for being clamped into the first strip-shaped notch and can move along the first strip-shaped notch; the edge of the second sleeve, which is close to the second nut, is provided with a second strip-shaped notch extending along the axial direction of the second sleeve; the second limiting piece is provided with a second boss which is used for being clamped into the second strip-shaped notch and can move along the second strip-shaped notch;
the first elastic piece is always in a compressed state; the second elastic piece is always in a compressed state.
2. The steering return system according to claim 1, wherein the first sleeve is sleeved outside the first elastic member; the first sleeve is provided with a first limiting ring, and the first elastic piece is clamped between the first limiting ring and the first limiting piece.
3. The steering return system according to claim 1, wherein the second sleeve is sleeved outside the second elastic member; the second sleeve is provided with a second limiting ring, and the second elastic piece is clamped between the second limiting ring and the second limiting piece.
4. The steering return system of claim 1 wherein the first sleeve flares outwardly adjacent an edge of the first stop member; the edge of the second sleeve, which is close to the second limiting piece, is outwards opened.
5. The steering return system according to any one of claims 1 to 4 wherein a first plastic annular spacer is sleeved over the first end of the rack; the first plastic annular gasket is clamped between the first elastic piece and the first limiting piece; a second plastic annular gasket is sleeved on the second end of the rack; the second plastic annular gasket is clamped between the second elastic piece and the second limiting piece.
6. The steering return system according to any one of claims 1 to 4, wherein the first elastic member is a first columnar spring fitted over the rack; the second elastic piece is a second cylindrical spring sleeved on the rack.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111429182.0A CN114132376B (en) | 2021-11-29 | 2021-11-29 | Steering return system |
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| CN202111429182.0A CN114132376B (en) | 2021-11-29 | 2021-11-29 | Steering return system |
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| CN114132376A CN114132376A (en) | 2022-03-04 |
| CN114132376B true CN114132376B (en) | 2023-06-13 |
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| KR101062339B1 (en) * | 2006-06-07 | 2011-09-05 | 주식회사 만도 | Tilt and Telescopic Steering |
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| CN110111637A (en) * | 2019-06-18 | 2019-08-09 | 昆明理工大学 | Simulate turning machine |
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| JPH0966845A (en) * | 1995-09-04 | 1997-03-11 | Nippon Seiko Kk | Electric power steering device |
| CN203111297U (en) * | 2013-03-07 | 2013-08-07 | 青岛科技大学 | Vehicle driven-by-wire steering mode switching limiting device |
| CN206774002U (en) * | 2017-04-28 | 2017-12-19 | 南昌墨泥软件有限公司 | It is a kind of machinery return just and middle screens automobile driving simulator transfer |
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| CN114132376A (en) | 2022-03-04 |
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